Electrical switch



oct. 30, 19.28. I H. w. BATCHELLER ELECTRICAL SWITCH Filed Oct. 9. 1926Patented a. 30, 1928.

UNITED STATES 1,689,852 PATENT OFFICE.

HUGH W. BATCHELLER, 0F MARION, INDIANA, ASSIGNOR TO IBOJ'AC MANUFACTUR-ING 00., INC., 0F WINOOSKI, VERMONT, A CORPORATION OF VERMONT.

' ELECTRICAL SWITCHL.

Application flled 0ctober 9, 1926. Serial No. 140,528.

This invention relates to electrical switches oi the push and pull type,and has for its objcvi. to provide a simple and compact switch, o;u-rnhie by a rectilinear movement of a push umi mll member.

- )t' the accompanying drawings forming a part of this specification,

Figure 1 is a side elevation of a switch embodying the invention.

l igure 2is a section on line 22 of Figure 1, showing the circuitbroken.

Figure 3 is a View similar to Figure 2, showing the circuit closed.

Figure 4 is a section'on line 44 of Figure 2.

v Figure 5 is a section on line 55 of Figure 2.

Figure 6 is an end View of the insulating body of the switch.

Figure 7 is a section on line 77 of Figure 6.

Figure 8 shows separately the fixed terminals of the switch. 7

Figure 9 shows partly in elevation and partly in section the closershifter hereinafter described.

Figure 10 shows in perspective the resilient jaws of the closer shifter.

The same reference characters indicate the same parts in all of thefigures.

My improved switch comprises a holder attachable to a support, a pair ofterminals 12 fixed to the holder and separated by a gap, the terminalsbeing insulated from each. other, preferably by an insulating bodyportion 13 of the holder.' Said body portion shown separately b Figures6 and 7 is a block of vulcanized fier, or other rigid insulatingmaterial, and is provided with sockets 14 (Figure 7) in which theterminals 12 are fixed, and with a cavity 15.

16 designates a gapJ-closer of conducting metal, movable in the cavityand guided by the sides thereof. The closer has a circular periphery andis preferably a ball. The Cavity 15 has guiding grooves 17 (Figures 4and 6) in its sides, conforming to opposite portions of the gap-closer16, and adapted to guide it toward and from the terminals 12 Themovement of the closer away from the terminals is limited by a stop 18which, in this instance, is a pin driven through the body 13, as shownby Figure 5.

The switch includes a manually movable closer shifter, comprising a pairof resilientcavity 15, and exert a yielding pressure in oppositedirections on the circular periphery of the closer 16. The arrangementis such that when the shifter is in the position shown by Figure 2, thejaws act by their closing pres sure on the periphery of the closer, topress the latter against the stop 18, and hold it sepa-- rated from theterminals 12. When the shifter is moved to the position shown .by Figure3, the jaws are first sprung outward by the periphery of the closer, andthen spring inward, and act to press the closer against the terminals12. When the shifter is moving from either of the positions shown byFigures 2 and 3, the jaws are first sprung apart by the periphery of thecloser, as indicated by dotted lines in Figure 9, and then spring inwardand exert shifting pressure on the closer. As may be seen by comparingFigure 2 with Figure 3, only a slight endwise movement of the shifter isrequired to shift the closer.

The jaws 19 and neck 20 being of conducting metal, I provide aninsulating connection between the neck and the member 21, the latterbeing preferably metallic. Said connection is shown by Figure 9, andcomprises an insulating collar 23, formed; to enter an orifice 24 in theneck and bear on one side thereof, and an insulating collar 25, bearingon the opposite side of the neck. The collars receive a reduced portion21 of the member 21, and are clamped against the neck 20 by theoperation of upsetting the portion 21" to form a bur of; head thereon.

The shank 22 is fixed to the insulating body 13, preferably by a head26, formed on the inner end of the shank and provided with an annularflange{27, which is spun over a shoulder on the body 13, as shown byFigures 2 and 3. i

It will be seen that the-wear of the closer 16 and jaws 19, causedby'the rubbing con tact of the jaws with the closer, is very slight,hence the switch is durable.

The shank 22 may be inserted in a hole in a supporting member 28, andsecured thereto by a clamping nut 29, engaged with a screwthread on theshank to press a spring washer 30 against one side of the support andconfine the head 26 against the opposite side.

1. A switch comprising a holder including a body of insulating material,a pair of gapseparated terminals fixed to the holder, and insulated fromeach other by said body, a one-piece movable spherical gap closer ofconducting material, the body being provided with means for guiding thecloser toward and from the terminals, a stop fixed to and insulated bythe body. and arranged to limit the movement of the closer from theterminals, and a closer shifter comprising a pair of resilient jawsconnectedby a neck, and a push and pull member, fixed to and insulatedfrom the neck and movable toward and from the terminals in a guidein'the holder, the said jaws exerting a yielding pressure in oppositedirections on the spherical periph- 1.esa,s52

that when the shifter is moved in one direction, the jaws contract onthe closer and press it against the terminals, and when the shifter ismoved in the opposite direction the jaws again contract on the closerand press it against the stop.

2. A switch as specified by claim 1, the insulating body of the holderhaving sockets in which the terminals are fixed, and a cavity throughwhich the stop extends, so that the terminals are insulated from eachother and the stop is insulated from the terminals by said body, thesides of said cavit having grooves formed to guide the ga c oser in apredetermined path, and a tu ular shank fixed to the insulating body andhaving means for attachment to a support, thebore of the shank guidingthe push and pull member.

In testimony whereof I have a'fixed my signature.

HUGH W. BATCH ELLER.

